Diamond holder



Aug. 19. 1924. 1 1,505,322

, E. DESMON DIAMOND HOLDER Fned June 19, 1922 Patented Aug. 19, 1924.

EDWARD DnsMoN, or DETROIT, MICHIGAN.

DIAMOND HOLDER. i.

Appimauon mea June 19, 1922.y seriai No. 569,375.

To all whom t may concern.' j

Be it known that 1, EDWARD DEsMoN, a `citizen of the United States, and residing at Detroit, in the county of Wayne and State of Michigan, have invented a new and` Im-k proved Diamond Holder., of which the following is a specification. This invention relates tomeans for yholding diamonds such as are employed in dressing grindng wheels, and its object is to provide a device of this kind which shall be universally adjustable so that it maybe used to dress the face or either side ofa grinding wheel as may be desired.

Grinding wheels are usually dressed by means of diamonds mounted in ypedestals which are supported on carriages in such a manner that the diamond and its holder are carried across the working surface of the wheel. Or the diamonds are mounted in the heads of shanks adapted to be secured in tool posts, and these tool posts' in turn are mounted on the carriages. The various other ways for holding the diamonds are negligible.

In the present case the invention disclosed embodies a support having a pair of jaws and a pin rotatably mounted therein, a collar on the pin between the jaws, the collar and pin having normally alined holes to receive the stem of the setting for the diamond, together with means forforcing the'r pin longitudinally of the collar to `lock the parts in the desired position.

This invention also consists in the details of construction illustrated in the accompanying drawing and particularly pointed out in the claims. f n

In the drawing, Figs. 1 and 2 are end and front elevations of one form of diamond` holder embodying my invention. Fig. 3 is a plan thereof. Fig. 4 is a section of the top of the holder shown in Figs. 1, 2 anid 3, showing the set-ting for the diamond in position. Figs. 5 and 6 are side and topfviews of a diiferent type of holder embodying thisy invention. ,j y

Similar reference characters refer to like parts throughout the several views.

The pedestal 1 shown in Figs. 1 to 4 inclusive has a base 2 adapted to rest on a carriage of any well known construction` and may be held thereon by means of a magnetic chuck, by a screw extending up from the carriage into the threaded hole 3 in the base 2, or by clamps pressing down on the tween the jaws.

base 2. These means for securing the pedestal to the carriage are'in'common use.

The upper end of thefypedestal is formed Awith two jaws 4 and, spaced apart toreceive the collar y6 and the two fibre washers 7 which prevent grit from 'reaching the pin 8. The `jaw 4 has-a hole sufficiently large to receive thel larger part of the'pin while the hole in the jaw 5 'is adapted-to receive the threaded portion 9. A nut10,r which may be knurled, engagesthis threaded end which may be ofany desired diameter.

The pin 8 is formedfwith a hole 12 to receive the ystem 13 and the collar 6 is also 10 is tightened it tends to slide the pin in the collar and in the jaws 4 and 5, which results in the stem 13 being'firmly gripped and the collar .being prevented from turning vbe- On the outer end of this stem 13 is a knob or setting 16 in which the diamond 17 is mounted. yThen the nut 10 is slack, the stem 13 may be rotated in the hole 12' to bring any desired face of the diamond to operative position and the collar, pin and the setting for the diamond may be rotated, as indicated in Fig. 1, to position the diamond at any de-l ydrilled to receive this stem. lWhenv the nut y."

grinding wheel and may dress these sides at any desired angle. When the nut is'tightened, the stem is locked in position. f

When the ysetting is to be mounted at the end ofia'shank 20, this shankis also provided with jaws 21 Vand 22 to receive the pin 23 which extends through thesey .jaws and through the` collar 6 and washers 7 into the ythe tool post so that the pin-23 willkbe at any desiredl angle.

The ldetails of construction and the proportions and .sizes of ythe'several parts may all be changed by those skilled kin the art withoutdeparting from the spirit of my invention as set forth in the following claims.

I claim :--l l y f 1.y A dressing device for grinding wheels comprising afpair of jaws, a collar rotatable between them, a pin rotatably and slidably mounted in the jaws and extending'through the stem, means to force the pin longitudi? nally of the collar to cause the collar and pin to grip the stem and rigidly hold thev collar and stem relative to the jaws, and means to support said jaws. 4

2. A grinding wheel dresser comprising a support embodying a pair of jaws, a collar rotatable between vthe jaws, a pin slidable in the coll-a1' land jaws, a diamond setting engaged by the. pin and collar, and means to move the pin relative 'to the collar and jaws to .look t-he collar and said setting in selected position. y

y 3. A' grinding wheel dresser comprising ay base, a pedestalthereon and formed with a pair of perforated jaws at'itsupper end, a pin slidablv and rotatably. mounted in said jaws and having althreaded end, a collar 4mounted onthe pin* and rotatable therewith between the jawssaid pin and eollar having' ali-ned holes, a stem rotatably mounted in saidl holes, a diamond setting at. the outer end of the'l stem, and a nut on the threaded end of the pin to move the pin longitudinally* of the oollar and jaws to look the parts.

ll. A grinding wheel dresser comprising 'a support, a pin mounted therein, a collar lar and the jaws to prevent the entrance '-l of grit. j

, EDWARD DEsMoN. 

